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if

33 Treffer, Zuletzt geändert: vor 3 Monaten

check the bash manpage ... ) operator produces true if... number of operands -n operand non zero le... 0, 1, or 2, respectively, is checked. -a file True if file exists. -b file True if file exists and is a block special file. -c file True if file exists and is a character special file.